It has been in hiatus for quite a few years while its developers have been busy with families and day jobs. However, there have been some recent developments:

NakdReality.com is now launching as a service providing POI, category, keyword, and augmented reality to developers and entrepreneurs wishing to avoid the pain of developing, maintaining, and scaling their own location-based search.

Lightrod.org has been developed by Peter Abrahamson, and features an open source points-of-interest engine based on the original mobilemaps code. Lightrod's engine can be quickly tested in the NakdReality test-bed.